reds = set()
while True:
    # print(reds)
    for i in reds:
        print(i, end=', ')
    print()
    if (len(reds)) >= 6:
        break
    red = int(input('Your choice? (1-33) (0 to quit): '))
    if 0 == red:
        break
    elif not(1 <= red <= 33):
        print('Wrong!')
    else:
        reds.add(red)
